Try the following to rule out a software problem:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Unsync all music and resync
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup. See:
- Restore to factory settings/new iOS device.
If still problem that indicates a hadware problem, likely a bad battery. Make an appointment at the Genius Bar of an Apple store.
I am currently an owner of an Ipod Touch 4th generation. I see you are having problems with your Ipod Touch, so I will try to find a solution to your problem.
- Hold down the Sleep/Wake and Home buttons for at least 10 sec. or until Apple logo appears
- Make an Appointment at the Genius Bar of an Apple store
- Do you fully charge it? Make sure that it shows a little black plug in the battery icon (this indicates fully charged, not when it shows a full green battery in the lock screen)
Hope that helps!
If none of the above solutions work, can you please respond back ASAP as I will try to find another solution to your problem (This might even help others with the same problem!)